analytical chemistry

The definition of analytical chemistry is examining materials by separating them into their components and identifying each one and how much there is of each one.

Using mass spectrometry to measure charged particles to determine the composition of a substance is an example of analytical-chemistry.

analytical chemistry

a branch of chemistry that deals with the identification of compounds and mixtures (qualitative analysis) or the determination of the proportions of the constituents (quantitative analysis): techniques commonly used are titration, precipitation, spectroscopy, chromatography, etc.